-up c-- ccc ccd cck cco ccp ccs ccu cdc cdd cdk cdo cdp cds cdu ckc ckd cko cks co- coc cod cok coo cop cos cou cpc cpd cpk cpo cpp cps cpu csc csd csk cso csp css csu cuc cud cuk cuo cup cus cuu dcc dcd dck dco dcp dcs dcu ddc ddd ddk ddo ddp dds ddu dkc dkk dko dkp dks dku doc dod dok doo dop dos dou dpc dpd dpk dpo dpp dps dpu dsc dsd dsk dso dsp dss dsu duc dud duk duo dup dus kcc kcd kck kcp kcs kcu kdc kdk kdo kdp kds kdu kkc kkk kkp kks kku koc kod kok koo kop kos kou kpc kpd kpk kpo kpp kps kpu ksc ksd ksk kso ksp kss ksu kuc kud kuk kup kus kuu oc- occ ocd ock oco ocp ocs ocu odc odd odo odp ods odu okc okd okk oko okp oks oku oo- ooc ood ook ooo oop oos op- opc opd opk opo opp ops os- osc osd osk oso osp oss osu ou- ouc oud ouk ouo oup ous p-p pcc pcd pck pco pcp pcs pcu pdc pdd pdk pdo pdp pds pdu pkc pkd pko pkp pks pku poc pod pok poo pop pos pou ppc ppd ppk ppo ppp pps ppu ps- psc psd psk pso psp pss psu puc pud puk pup pus puu scc scd sck sco scp scs scu sdc sdd sdk sdo sdp sds sdu sk- skc skd skk sko skp sks sku soc sod sok soo sop sos sou spc spd spk spo spp sps spu ss- ssc ssd ssk sso ssp sss ssu suc sud suk suo sup sus suu ucc ucd uck uco ucp ucs ucu udc udd udk udo udp uds udu ukc ukk ukp uku uoc uod uok uoo uop uos up- upc upd upk upo upp ups upu usc usd usk uso usp uss usu uuc uus uuu